2005 Ford F250 6x6 Powesrtroke Diesel

For additional heat dissipation, Chuck hooked up a belt-driven pump to the driveshaft between the power divider and front differential. This allows him to circulate fluid from the front differential to a separate oil cooler, dropping its operating temp more than 130 degrees Fahrenheit.

The biggest problem Chuck encountered was that when Ford went from 16- to 17-inch wheels (in the'04 to '05 model-years), he found that Ford changed to a larger pilot hole on the rims. Thus, he had to make aluminum spacers to fit the wheels to the hubs and drill a new set of bolt holes, as well. Normally, he doesn't put on hubcaps, but he used the factory bolt holes to secure them and cover up the extra bolt pattern.

That wasn't good enough for Chuck, though-are you sensing a theme here? Forget about spinners-anybody can buy those off the shelf. Instead, he wanted his Blue Oval hubcaps to stay horizontal while he's rolling down the road, so after cutting out a set of hubcaps from a Ford Expedition, he added 3-ounce weights and bearings, mounted with a stainless steel shaft and the arm from the original hubcap.

So, where does he go from here? "I've always wanted to do a tilting front end like on those big rigs," he says with a smile.

And you know what? He probably has a formula for that, too.